“The troll inside my head is much more vicious than the trolls I get online. When I was depressed and my brain would constantly say to me, 'Life is hopeless,' I had to basically say, 'I don't care what you're going to say.' And ultimately, it lost its power. And I've seen that happen as people troll me and I play with them.”

American entrepreneur, venture capitalist, writer and author

Bryan Johnson is an American entrepreneur, venture capitalist, writer and author. He is the founder and former CEO of Kernel, a company that develops devices to monitor and record brain activity, and of OS Fund, a venture capital firm focused on early-stage science and technology companies. His work sits at the intersection of business, science, and technology. Through Kernel and OS Fund, he has been associated with efforts to build tools for understanding the brain and to back new companies in scientific fields. He is also known as a writer and author.